{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "235421",
    "entityType": "User",
    "nonce": "0xd49a51f5cadb5d646ac615e193247990a4a608660a2ff36b805ac47caa02fbda",
    "signature": "0x2154a8b7b4f2bbc68bdc69a20010fc89fc8ecc106fb2c0278e1801040c47498c5dcb71c6ceca8047d0267dbb8ade69d8a248794d77ab828a561e12bb114492921c",
    "signer": "0xca9222f1aedE81bB652753be5E233B18473E61E5",
    "userId": "9780"
  }
}